vi

Iliyana Chakarova

E-learning in the Plovdiv University - status and perspectives (results of an experiment) 71

Ivan Stoyanov Valkov

Hybrid wind-generating oscillatory inductive equipment for producing electric current 76

M. Prieler, M. Leeb, T. Reiter

Statistical analysis of Austrian Energy Performance Certificates, time period 2006-2015 78

Milena Bundeva, Dinko Ortakchiev and Angel Chekichev

Digital processing of RGB images using MATLAB GUI 85

Miroslav Aleksiev, Stanislav Aleksiev

High-processing methods for lathes details using CNC machines 89

Nicolae Alexandru Stoica, Alina Maria-Petrescu, Andrei Tudor, Alexandru Valentin Radulescu

Experimental studies of the friction phenomenon for steel on other materials friction couples at low sliding velocities 92

Nickolay Bakharev, Boris Gorshkov, Ruslan Dikov

Formation Of Continuous And Multilevel Technical Education 96

Ranjeet Rana, Aman Gupta,Sunny Narayan

Review of working of aero-engines 102

Rustem Manatbayev, Assylbek Tulepbergenov, Saltanat Bergalieva, Kalasov Nurdaulet

On the development of a numerical calculation of a rotation the wind turbine Darrieus 108

S. S. Petrov

Rationalization of expenses for the lighting of road and urban tunnels 115

S. S. Petrov, A. S. Pachamanov

Selection of classical and/or leds lighting for road tunnel under criterion lifecycle costs of the installation 121

Seda H. Bostanci

The effects of wind energy projects in urban planning 128

Sergej V. Fedorov

Energetic interpretation of friction coefficients with position of energy balance of friction 132

Sorinel Toderas Siretean, llie Musca, Luminita Irimescu

Numerical study of the rolling tendency 138

Stanislav Aleksiev, Miroslav Aleksiev

Deciphering the profile of the stator of the Wankel engine 142

Copyright © 2016 by Plovdiv University "Paisii Hilendarski" - Plovdiv, Bulgaria.

89

15th "Internationa) Scientific Conference" RE & IT - 2016, SMOLYAN - BULGARIA

HIGH-PROCESSING METHODS FOR LATHES DETAILS USING CNC MACHINES

MIROSLAV ALEKSIEV, STANISLAV ALEKSIEV

Abstract: The article shows high performance methods for processing turning workpieces milling tools with parallel axes to the axis of the workpiece. Derived are equations the path of a point on the cutting edge of the tool, which is a prerequisite to determine its geometry.

Key words: high-performance methods, turning to milling tools

1. Introduction Modern CNC machines are able to

implement the turning and milling processes on the same machine. These machines are called multi-processing machines (multitasking machine). Combine the advantages of milling and turning. Processing with tool with a plurality of cutting teeth such as mills, many times superior in performance planing tool, which by definition is a tool with a cutting wedge. With the advent and widespread use of details of weave-called engineering plastics require their fast processing. All of the above determines the relevance of the topic.

2. Schematic diagrams of processing lathes with milling tools surfaces and types of machines such technological capabilities

Silhouette of the cylindrical surfaces with milling tools can be obtained by: - submission of the milling cutter in the axial

direction during rotation of the workpiece (figure 1).

submission of milling cutter in a radial direction during rotation of the workpiece (figure 2)

Figure 1. Processing of cylindrical surfaces with axial submission tool

Figure 2. Processing of cylindrical surfaces with radial submission too!

By moving the tool simultaneously in two directions, it is possible to produce: - cam surfaces, crankshafts. - conical surfaces, but requires processing by 5

axes. - details such as turbine blades, by feeding the tool in more than 2 axes while rotating the workpiece.

Turning center machines are designed as lathes inclined body with a power tool in the C-axis and Y-axis. They perfectly fit for the production of parts that require viability of milling with subsequent milling and drilling operations. It saves time because it takes only a process of establishment and do not lose accuracy due to the establishment of another machine. Such machines are manufactured by different companies producing

Copyright © 2016 by Plovdiv University "Paisii Hilendarski" - Plovdiv, Bulgaria.

90